EP 1635332 A3 20080116 - Magnetic recording/reproducing apparatus and magnetic recording/reproducing method
Title (en)
Magnetic recording/reproducing apparatus and magnetic recording/reproducing method
Title (de)
Magnetisches Aufnahme/Wiedergabegerät und magnetisches Aufnahme/Wiedergabeverfahren
Title (fr)
Appareil d'enregistrement/reproduction magnétique et méthode d'enregistrement/reproduction magnétique
Publication
Application
Priority
JP 2004265994 A 20040913
Abstract (en)
[origin: EP1635332A2] Data is read out from a disk (2) in which the data is recorded in the perpendicular magnetic recording system by a head, amplified by a head preamplifier (11), and signal-processed by a read channel LSI (12). A read-out processing unit (31) of a HDD controller sends out signals processed by the read channel LSI (12) as an output of a magnetic recording apparatus. Further, a cut-off frequency controlling unit (32) of the HDD controller (13) determines a cut-off frequency of á high-pass filter of the head preamplifier (11) based on a data transfer rate read out by the read-out processing unit and/or the head position, and controls a cut-off frequency changing unit (21) to change the value of the cut-off frequency.
IPC 8 full level
G11B 5/012 (2006.01); G11B 5/09 (2006.01); G11B 20/10 (2006.01)
CPC (source: EP KR US)
G06K 7/0021 (2013.01 - KR); G06K 13/0837 (2013.01 - KR); G11B 5/012 (2013.01 - EP US); G11B 5/09 (2013.01 - EP US); G11B 20/10009 (2013.01 - EP US); G11B 20/10046 (2013.01 - EP US); G11B 20/10481 (2013.01 - EP US); H01R 12/57 (2013.01 - KR); G11B 2220/2516 (2013.01 - EP US)
Citation (search report)
- [Y] US 2002089773 A1 20020711 - SHIMOMURA KAZUHITO [JP], et al
- [Y] JP H06259702 A 19940916 - FUJITSU LTD
- [A] US 5163035 A 19921110 - HORIKIRI KENICHI [JP]
- [A] JP 2001209901 A 20010803 - HITACHI LTD
- [PA] JP 2004326973 A 20041118 - TOSHIBA CORP
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1635332 A2 20060315; EP 1635332 A3 20080116; CN 100343896 C 20071017; CN 1750125 A 20060322; JP 2006079793 A 20060323; JP 4268108 B2 20090527; KR 100671859 B1 20070122; KR 20060042930 A 20060515; US 2006056089 A1 20060316; US 7142380 B2 20061128
DOCDB simple family (application)
EP 05250333 A 20050124; CN 200510007551 A 20050205; JP 2004265994 A 20040913; KR 20050009433 A 20050202; US 4257805 A 20050124